Plural of existence; multiple instances or forms of being, life, or occurrence.
From existence (Latin existentia, the state of being) with regular English pluralization via -es. The concept evolved from medieval philosophy to describe the fact or state of being real or alive.
When philosophers talk about multiple existences, they might mean different ways of being—the existence of a person, the existence of a thought, the existence of a number. It's a way to say 'being' applies to totally different kinds of things!
Complete word intelligence in one call. Free tier — 50 lookups/day.